diff --git a/CHANGELOG.md b/CHANGELOG.md
index f3fc90e3..267c5ba0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - [Remote Process Definition Extension](./extensions/remote-process-definition/README.md)
   - [Processing Parameters Extension](./extensions/processing-parameters/README.md)
 - `GET /`: New relation type `web-editor` [#577](https://github.com/Open-EO/openeo-api/issues/577)
+- `GET /service_types`: Added `specification` property to identify the actual specification the exposed services implement. [#580](https://github.com/Open-EO/openeo-api/issues/580)
 - `GET /credentials/oidc`: Added `authorization_parameters` property to enforce specific parameters for the authorization endpoint [#534](https://github.com/Open-EO/openeo-api/issues/534)
 - `POST /result`: Added response header "OpenEO-Identifier" to expose an identifier associated with a synchronous processing request.
 - Added `stacktrace` to log entries (e.g. for `GET /jobs/{job_id}/logs`) [#512](https://github.com/Open-EO/openeo-api/issues/512)
diff --git a/openapi.yaml b/openapi.yaml
index 768e5bff..810ced41 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -2521,6 +2521,9 @@ paths:
         [OGC Schema Repository](http://schemas.opengis.net/) for the respective
         services.
 
+        It is RECOMMENDED to use the values provided in the `specification` property as
+        the service names.
+
         Service names MUST be accepted in a *case insensitive* manner throughout the API.
       tags:
         - Capabilities
@@ -2555,6 +2558,8 @@ paths:
                       $ref: '#/components/schemas/deprecated'
                     experimental:
                       $ref: '#/components/schemas/experimental'
+                    specification:
+                      $ref: '#/components/schemas/service_specification'
                     configuration:
                       title: Service Configuration
                       description: Map of supported configuration settings made available to the creator of the service.
@@ -5860,6 +5865,38 @@ components:
             - $ref: '#/components/schemas/usage'
         log_level:
           $ref: '#/components/schemas/min_log_level_default'
+    service_specification:
+      type: string
+      description: |-
+        The type of the service that is implemented.
+        Provides an indication of what clients can expect for the service.
+        It is REQUIRED to use the official abbreviations as shown as otherwise
+        client software might not recognize the service type.
+        
+        - OGC WCS: wcs
+        - OGC WFS: wfs
+        - OGC WMS: wms
+        - OGC WMTS: wmts
+        - OGC API - Discrete Global Grid Systems (DGGS) - ogcapi-dggs
+        - OGC API - Environmental Data Retrieval (EDR): ogcapi-edr
+        - OGC API - Features: ogcapi-features
+        - OGC API - Coverages: ogcapi-coverages
+        - OGC API - Maps: ogcapi-maps
+        - OGC API - Tiles: ogcapi-tiles
+        - OSGeo Tile Map Service (TMS): tms
+        - STAC: stac
+        - XYZ: xyz
+
+        For other OGC APIs, use the the result of the following regular expression applied
+        to the external identifier of respective OGC document:
+        `^http://www.opengis.net/doc/IS/([\w-]+)-\d+/`
+
+        For other legacy OGC specifications, use the abbreviations used in the official
+        [OGC Schema Repository](http://schemas.opengis.net/) for the respective specification.
+
+        For other missing service types, please open an issue in the
+        [openEO API repository](https://github.com/Open-EO/openeo-api).
+      example: xyz
     service_type:
       description: >-
         Definition of the service type to access result data. All available